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const peliasQuery = require('pelias-query');
const defaults = require('./reverse_defaults');
const check = require('check-types');
const _ = require('lodash');
const logger = require('pelias-logger').get('api');
//------------------------------
// reverse geocode query
//------------------------------
var query = new peliasQuery.layout.FilteredBooleanQuery();
// mandatory matches
// (none)
// scoring boost
query.sort( peliasQuery.view.sort_distance );
// non-scoring hard filters
query.filter( peliasQuery.view.boundary_circle );
query.filter( peliasQuery.view.sources );
query.filter( peliasQuery.view.layers );
query.filter( peliasQuery.view.categories );
query.filter( peliasQuery.view.boundary_country );
// --------------------------------
function generateQuery( clean ){
const vs = new peliasQuery.Vars( defaults );
let logStr = '[query:reverse] ';
// set size
if( clean.querySize ){
vs.var( 'size', clean.querySize);
logStr += '[param:querySize] ';
}
// sources
if( check.array(clean.sources) && clean.sources.length ) {
vs.var('sources', clean.sources);
logStr += '[param:sources] ';
}
// layers
if( check.array(clean.layers) && clean.layers.length ) {
// only include non-coarse layers
vs.var( 'layers', _.intersection(clean.layers, ['address', 'street', 'venue']));
logStr += '[param:layers] ';
}
// focus point to score by distance
if( check.number(clean['point.lat']) &&
check.number(clean['point.lon']) ){
vs.set({
'focus:point:lat': clean['point.lat'],
'focus:point:lon': clean['point.lon']
});
logStr += '[param:focus_point] ';
}
// bounding circle
// note: the sanitizers will take care of the case
// where point.lan/point.lon are provided in the
// absense of boundary.circle.lat/boundary.circle.lon
if( check.number(clean['boundary.circle.lat']) &&
check.number(clean['boundary.circle.lon']) ){
vs.set({
'boundary:circle:lat': clean['boundary.circle.lat'],
'boundary:circle:lon': clean['boundary.circle.lon']
});
if (check.undefined(clean['boundary.circle.radius'])){
// for coarse reverse when boundary circle radius is undefined
vs.set({
'boundary:circle:radius': defaults['boundary:circle:radius']
});
} else if (check.number(clean['boundary.circle.radius'])){
// plain reverse where boundary circle is a valid number
vs.set({
'boundary:circle:radius': clean['boundary.circle.radius'] + 'km'
});
}
logStr += '[param:boundary_circle] ';
}
// boundary country
if( check.string(clean['boundary.country']) ){
vs.set({
'boundary:country': clean['boundary.country']
});
logStr += '[param:boundary_country] ';
}
// categories
if (clean.categories) {
vs.var('input:categories', clean.categories);
logStr += '[param:categories] ';
}
logger.info(logStr);
return {
type: 'reverse',
body: query.render(vs)
};
}
module.exports = generateQuery;